♻️ Adapt type page builder and finish refactor.

Author: AlexV525

lib/src/widget/builder/audio_page_builder.dart

@@ -10,7 +10,7 @@ import 'package:wechat_assets_picker/wechat_assets_picker.dart';
 
 import 'package:wechat_assets_picker/src/constants/constants.dart';
 
-class AudioPageBuilder<A, P> extends StatefulWidget {
+class AudioPageBuilder extends StatefulWidget {
   const AudioPageBuilder({
     Key key,
     this.asset,
@@ -23,7 +23,7 @@ class AudioPageBuilder<A, P> extends StatefulWidget {
 
   /// [State] for asset picker viewer.
   /// 资源查看器的状态 [State]
-  final AssetPickerViewerState<A, P> state;
+  final AssetPickerViewerState<AssetEntity, AssetPathEntity> state;
 
   @override
   State<StatefulWidget> createState() => _AudioPageBuilderState();

lib/src/widget/builder/image_page_builder.dart

@@ -6,7 +6,7 @@ import 'package:flutter/material.dart';
 import 'package:extended_image/extended_image.dart';
 import 'package:wechat_assets_picker/wechat_assets_picker.dart';
 
-class ImagePageBuilder<A, P> extends StatelessWidget {
+class ImagePageBuilder extends StatelessWidget {
   const ImagePageBuilder({
     Key key,
     this.asset,
@@ -20,15 +20,18 @@ class ImagePageBuilder<A, P> extends StatelessWidget {
 
   /// [State] for asset picker viewer.
   /// 资源查看器的状态[State]
-  final AssetPickerViewerState<A, P> state;
+  final AssetPickerViewerState<AssetEntity, AssetPathEntity> state;
 
   final List<int> previewThumbSize;
 
+  DefaultAssetPickerViewerBuilderDelegate get builder =>
+      state.builder as DefaultAssetPickerViewerBuilderDelegate;
+
   @override
   Widget build(BuildContext context) {
     return GestureDetector(
       behavior: HitTestBehavior.opaque,
-      onTap: state.buidler.switchDisplayingDetail,
+      onTap: builder.switchDisplayingDetail,
       child: ExtendedImage(
         image: AssetEntityImageProvider(
           asset,
@@ -37,7 +40,7 @@ class ImagePageBuilder<A, P> extends StatelessWidget {
         ),
         fit: BoxFit.contain,
         mode: ExtendedImageMode.gesture,
-        onDoubleTap: state.builder.updateAnimation,
+        onDoubleTap: builder.updateAnimation,
         initGestureConfigHandler: (ExtendedImageState state) {
           return GestureConfig(
             initialScale: 1.0,
@@ -49,7 +52,9 @@ class ImagePageBuilder<A, P> extends StatelessWidget {
             inPageView: true,
           );
         },
-        loadStateChanged: state.builder.previewWidgetLoadStateChanged,
+        loadStateChanged: (ExtendedImageState state) {
+          return builder.previewWidgetLoadStateChanged(context, state);
+        },
       ),
     );
   }

lib/src/widget/builder/video_page_builder.dart

@@ -4,11 +4,12 @@
 ///
 import 'package:flutter/material.dart';
 import 'package:video_player/video_player.dart';
+import 'package:wechat_assets_picker/src/delegates/asset_picker_viewer_builder_delegate.dart';
 import 'package:wechat_assets_picker/wechat_assets_picker.dart';
 
 import 'package:wechat_assets_picker/src/constants/constants.dart';
 
-class VideoPageBuilder<A, P> extends StatefulWidget {
+class VideoPageBuilder extends StatefulWidget {
   const VideoPageBuilder({Key key, this.asset, this.state}) : super(key: key);
 
   /// Asset currently displayed.
@@ -17,7 +18,7 @@ class VideoPageBuilder<A, P> extends StatefulWidget {
 
   /// [State] for asset picker viewer.
   /// 资源查看器的状态[State]
-  final AssetPickerViewerState<A, P> state;
+  final AssetPickerViewerState<AssetEntity, AssetPathEntity> state;
 
   @override
   _VideoPageBuilderState createState() => _VideoPageBuilderState();
@@ -40,6 +41,9 @@ class _VideoPageBuilderState extends State<VideoPageBuilder> {
   /// 初始化视频控制器时是否发生错误
   bool hasErrorWhenInitializing = false;
 
+  DefaultAssetPickerViewerBuilderDelegate get builder =>
+      widget.state.builder as DefaultAssetPickerViewerBuilderDelegate;
+
   @override
   void initState() {
     super.initState();
@@ -99,8 +103,8 @@ class _VideoPageBuilderState extends State<VideoPageBuilder> {
       if (isPlaying) {
         _controller.pause();
       } else {
-        if (widget.state.builder.isDisplayingDetail) {
-          widget.state.builder.switchDisplayingDetail(value: false);
+        if (builder.isDisplayingDetail) {
+          builder.switchDisplayingDetail(value: false);
         }
         if (_controller.value.duration == _controller.value.position) {
           _controller
@@ -132,7 +136,7 @@ class _VideoPageBuilderState extends State<VideoPageBuilder> {
                   behavior: HitTestBehavior.opaque,
                   onTap: isPlaying
                       ? playButtonCallback
-                      : widget.state.switchDisplayingDetail,
+                      : builder.switchDisplayingDetail,
                   child: Center(
                     child: AnimatedOpacity(
                       duration: kThemeAnimationDuration,
@@ -160,8 +164,6 @@ class _VideoPageBuilderState extends State<VideoPageBuilder> {
                 ),
             ],
           )
-        : Center(
-            child: Text(Constants.textDelegate.loadFailed),
-          );
+        : Center(child: Text(Constants.textDelegate.loadFailed));
   }
 }